|Using rheology to estimate short-term retardant droplet sizes (Volume no.327) - Van Meter, Wayne P|
Keywords: Fireproofing agents; Rheology (Biology)
|Rheology and streaming birefringence of an anisotropic fluid - Schonblom, James Eric|
Keywords: Liquid crystals; Rheology
|On the flow induced by a Maxwell-Chartoff rheometer (Volume 74C) - Kearsley, Elliot A.|
Journal of Research of the National Bureau of Standards
Keywords: Normal stresses; rheology; rheometer; viscoelasticity
|Temperature dependence of jet swell and material functions in polymer melt systems - Johnson, Malcolm Cloud, 1948-|
Keywords: Rheology; Viscoelasticity; Polymers and polymerization
|Relating fresh concrete viscosity measurements from different rheometers (Volume 108) - Ferraris, C.F.|
Journal of Research of the National Institute of Standards and Technology
Keywords: rheology; concrete rheometers; plastic viscosity
|Rheological Evaluation of Surfactants with Potential Application as Divergent Agents|
Viscoelastic surfactants are very useful in various oilfield operations, such as enhancing oil recovery and hydraulic fracturing and acidification. Because of the permeability differences in the rock reservoir, a large part of the fluid injected can migrate to undesired regions. Therefore, viscous fluids are used to modify the permeability of certain regions of the rock formation. The products added to the fluids that provide this characteristic are called divergent agents...
Keywords: Divergent Agents; Surfactants; Rheology; Surface Tension; FTIR
|Effect of adsorbed poly (vinyl alcohol) on the properties of model silica suspensions - Khadilkar, Chandra|
Keywords: Polyvinyl alcohol; Silica; Suspensions (Chemistry; Rheology
|Molecular weight characterization and rheology of lignins for carbon fibers - Schmidl, Gerald Wolfgang|
Keywords: Rheology; Lignin; Molecular weights; Carbon fibers
|Cerebral rheography and its diagnostic possibilities in clinical practice - Belluschi, A.|
Cerebrum rheography - diagnostic possibilities in clinical practice
Keywords: BIOTECHNOLOGY; BLOOD FLOW; CEREBRUM; CLINICAL MEDICINE; FLOW MEASUREMENT; RHEOLOGY; CEREBRUM; CLINICAL MEDICINE; RHEOLOGY
|Proceedings of the Fourth International Congress on Rheology. Part 4 - Symposium on Biorheology - Copley, A. L|
Biorheology studies of cytoplasmic streaming, erythrocyte suspensions, and blood clotting
Keywords: ANIMALS; BLOOD FLOW; CONFERENCE; ERYTHROCYTE; RHEOLOGY; BLOOD COAGULATION; BLOOD FLOW; CLOTTING; COAGULATION; CONFERENCES; CYTOPLASM; ERYTHROCYTES; RHEOLOGY
|Investigation of ordinary waves in a Chew, Goldberger, and Low approximation - Baranov, V. B|
Hydrodynamic collisionless plasma equations for approximating ordinary wave propagation in plasma
Keywords: ELASTIC PROPERTIES; GEOLOGY; ROCKS; SEISMOGRAMS; SURVEYS; METHODOLOGY; RHEOLOGY; SOIL MECHANICS
|Correlating laboratory air drop data with retardant rheological properties (Volume no.278) - Van Meter, Wayne P. cn|
Keywords: Fireproofing agents; Rheology (Biology) Aeronautics in forest fire control
|General Overview of the ODC Elimination Effort of the RSRM Program - Evans, Kurt|
The purpose of the ODC Elimination Program of the Space Shuttle RSRM Program is to eliminate the usage of 1, 1, 1 trichloroethane (TCA) in all RSRM (Reusable Solid Rocket Motor) manufacturing processes. This program consists of the following phases and objectives: Phase 0 - Convert to greaseless shipping of metal components. Phase 1 - Eliminate TCA vapor degreasing and usage in propellant cleaning operations...
Keywords: GREASES; OILS; OUTGASSING; RHEOLOGY; ACCELERATED LIFE TESTS; POLYTETRAFLUOROETHYLENE
|Dynamic balancing in a vacuum - NON|
No Abstract Available
Keywords: COAL GASIFICATION; DESULFURIZING; ENERGY TECHNOLOGY; PUMPS; SPRAYERS; COEFFICIENT OF FRICTION; RHEOLOGY
|Development of an Empirical Methods for Predicting Jet Mixing Noise of Cold Flow Rectangular Jets - Russell, James W|
This report presents an empirical method for predicting the jet mixing noise levels of cold flow rectangular jets. The report presents a detailed analysis of the methodology used in development of the prediction method. The empirical correlations used are based on narrow band acoustic data for cold flow rectangular model nozzle tests conducted in the NASA Langley Jet Noise Laboratory. There were 20 separate nozzle test operating conditions...
Keywords: LAVA; FLOW DISTRIBUTION; FLOW MEASUREMENT; FLOW CHARACTERISTICS; FRACTALS; REMOTE SENSING; RHEOLOGY; MORPHOLOGY; GRAVITATIONAL EFFECTS
|Land Surface Temperature Measurements from EOS MODIS Data - Wan, Zheng-Min|
This report summarizes the accomplishments made by the MODIS LST (Land-Surface Temperature) group at University of California, Santa Barbara, under NASA Contract. Version 1 of the MODIS Land-Surface Temperature Algorithm Theoretical Basis Document (ATBD) was reviewed in June 1994, version 2 reviewed in November 1994, version 3.1 in August 1996, and version 3.3 updated in April 1999. Based on the ATBD, two LST algorithms were developed, one is the generalized split-window algorithm and another is...
Keywords: GRANULAR MATERIALS; FLUID MECHANICS; INTERSTITIALS; VISCOUS FLOW; RHEOLOGY; MULTIPHASE FLOW; MARS SURFACE; SEDIMENTS; SOILS
|The effects of strain heating in lithospheric stretching models - Stanton, M.|
The deformation by stretching of a continental type lithosphere has been formulated so that the problem can be solved by a continuum mechanical approach. The deformation, stress state, and temperature distribution are constrained to satisfy the physical laws of conservation of mass, energy, momentum, and an experimentally defined rheological response. The conservation of energy equation including a term of strain energy dissipation is given...
Keywords: CONTINENTS; RHEOLOGY; CRUSTAL FRACTURES; EARTH (PLANET); EARTH CRUST; GEOLOGICAL FAULTS; MARS (PLANET); VENUS (PLANET); BRITTLENESS; COMPARISON
|Human Exploration of Mars: The Reference Mission of the NASA Mars Exploration Study Team - NON|
Personnel representing several NASA field centers have formulated a ''Reference Mission'' addressing human exploration of Mars. This report summarizes their work and describes a plan for the first human missions to Mars, using approaches that are technically feasible, have reasonable risks, and have relatively low costs. The architecture for the Mars Reference Mission builds on previous work of the Synthesis Group (1991) and Zubrin's (1991) concepts for the use of propellants derived from the Ma...
Keywords: FOAMS; LIGHT SCATTERING; RHEOLOGY; ELASTIC PROPERTIES; MICROGRAVITY; SHEAR STRESS; SHEAR STRAIN; STRAIN RATE; DIFFUSION
|Certain Problems Related to the Viscosity of Fused Metals - Shvidkovskiy, Ye. G|
Viscosity of fused metals
Keywords: CRYSTALLIZATION; VISCOSITY; HEREDITY; HETEROGENEITY; IMPURITIES; ISOTHERMS; METALS; RHEOLOGY; VISCOSITY; FUSED METAL
|Nature of the South Pole on Mars Determined by Topographic Forcing of Atmosphere Dynamics - Colaprete, A.|
Introduction: The observed Springtime (Ls approx. 200) surface albedo in the Martian southern polar region is shown in Figure 1. In general, the hemisphere west of Hellas is marked by relatively high values of surface albedo. In contrast, the hemisphere east of Hellas contains extensive regions of very low surface albedo. One of the brightest features within the western hemisphere is the South Pole Residual Cap (SPRC)...
Keywords: CONVECTION; ICE; ICY SATELLITES; GALILEAN SATELLITES; TEMPERATURE DEPENDENCE; RHEOLOGY; ACTUATORS; NUMERICAL ANALYSIS; PERTURBATION
|Photovoltaic conversion of laser power to electrical power - Walker, G. H.|
Photovoltaic laser to electric converters are attractive for use with a space-based laser power station. This paper presents the results of modeling studies for a silicon vertical junction converter used with a Nd laser. A computer code was developed for the model and this code was used to conduct a parametric study for a Si vertical junction converter consisting of one p-n junction irradiated with a Nd laser...
Keywords: CONSERVATION LAWS; KINEMATICS; MATHEMATICAL MODELS; RHEOLOGY; CONTINENTS; DEFORMATION; EARTH CRUST; EARTH MANTLE; ENERGY DISSIPATION; GEOTEMPERATURE; HEATING; STRAIN RATE
|Data Synchronization Discrepancies in a Formation Flight Control System - Ryan, Jack|
Aircraft hardware-in-the-loop simulation is an invaluable tool to flight test engineers; it reveals design and implementation flaws while operating in a controlled environment. Engineers, however, must always be skeptical of the results and analyze them within their proper context. Engineers must carefully ascertain whether an anomaly that occurs in the simulation will also occur in flight. This report presents a chronology illustrating how misleading simulation timing problems led to the implem...
Keywords: PLANETARY GEOLOGY; STRESS-STRAIN RELATIONSHIPS; TECTONICS; RHEOLOGY; CREEP PROPERTIES; ROCKS; CRUSTAL FRACTURES; TERRESTRIAL PLANETS; CONSTITUTIVE EQUATIONS; ICE; GRAIN SIZE
|Computation of steady and unsteady quasi-one-dimensional viscous/inviscid interacting internal flows at subsonic, transonic, and supersonic Mach numbers - Swafford, Timothy W.|
Computations of viscous-inviscid interacting internal flowfields are presented for steady and unsteady quasi-one-dimensional (Q1D) test cases. The unsteady Q1D Euler equations are coupled with integral boundary-layer equations for unsteady, two-dimensional (planar or axisymmetric), turbulent flow over impermeable, adiabatic walls. The coupling methodology differs from that used in most techniques reported previously in that the above mentioned equation sets are written as a complete system and s...
Keywords: ALUMINUM ALLOYS; SHEARING; VISCOMETERS; CERAMIC MATRIX COMPOSITES; MICROSTRUCTURE; RHEOLOGY; SILICON CARBIDES; SLURRIES; CONCENTRATION (COMPOSITION); CONCENTRIC CYLINDERS; COOLING
|Unmanned entry probe sizing for a 1975 manned Mars flyby mission - Cassidy, D. E|
No Abstract Available
Keywords: MECHANICAL DRIVES; SHEAR STRESS; TRANSMISSIONS (MACHINE ELEMENTS); PERFORMANCE PREDICTION; RHEOLOGY; TRACTION; DESIGN ANALYSIS; ELASTOPLASTICITY; LOW ASPECT RATIO; LUBRICANTS; SHEAR STRENGTH
|Oceanic structures of the Earth and the North Depression of Mars: A comparison of the formation mechanisms - Milanovsky, E. E.|
The system of contemporary oceans on Earth and the North Depression of Mars are quasi-symmetrical in reference to the centers of of the hemispheres. Both systems had been formed over the common megacycle of evolution of planets and their origin is likely to have similar features. The formation of the Earth's oceanic system within the South Hemisphere seems to have proceeded in three stages: (1) the formation of a network of passive rifts at the center of the Gondwana; (2) the formation of the sy...
Keywords: ARIZONA; SHEARING; DEFORMATION; KINEMATICS; RHEOLOGY; BRITTLENESS; CORES; CRUSTAL FRACTURES; DUCTILITY; EARTH CRUST; GEOLOGICAL FAULTS; GEOMORPHOLOGY; METAMORPHIC ROCKS
|Arc-Jet Flow Characterization - Fletcher, Douglas G|
Arc-jet facilities have been used extensively to evaluate materials for use in the thermal protection of aerospace vehicles, from Apollo spacecraft and the shuttle to the X-33 and the X-34. Although arc-jet tests are indicative of how well a material will perform in extreme aerothermal heating environments, it has not been possible to directly relate arc- jet test results to flight applications. The main obstacle has been an inability to determine the total enthalpy of the nonequilibrium arc-jet...
Keywords: HIGH TEMPERATURE; IMIDES; OLIGOMERS; RHEOLOGY; RESIN TRANSFER MOLDING; GLASS TRANSITION TEMPERATURE; SYNTHESIS (CHEMISTRY); THERMODYNAMICS; STABILITY; CARBON; VISCOSITY; ANHYDRIDES
|Lithospheric strength of Ganymede: Clues to early thermal profiles from extensional tectonic features - Golombek, M. P.|
While it is generally agreed that the strength of a planet's lithosphere is controlled by a combination of brittle sliding and ductile flow laws, predicting the geometry and initial characteristics of faults due to failure from stresses imposed on the lithospheric strength envelope has not been thoroughly explored. Researchers used lithospheric strength envelopes to analyze the extensional features found on Ganymede...
Keywords: CRUSTAL FRACTURES; TEMPERATURE GRADIENTS; THICKNESS; FRACTURE STRENGTH; GEOMORPHOLOGY; PLANETARY GEOLOGY; VENUS SURFACE; RHEOLOGY; ROCKS; STRESSES; SURFACE TEMPERATURE
|Thermal Load Considerations for Detonative Combustion-Based Gas Turbine Engines - Paxson, Daniel E.|
An analysis was conducted to assess methods for, and performance implications of, cooling the passages (tubes) of a pulse detonation-based combustor conceptually installed in the core of a gas turbine engine typical of regional aircraft. Temperature-limited material stress criteria were developed from common-sense engineering practice, and available material properties. Validated, one-dimensional, numerical simulations were then used to explore a variety of cooling methods and establish whether ...
Keywords: ADHESIVES; LOW MOLECULAR WEIGHTS; TENSILE STRENGTH; MIXTURES; PLASTICIZERS; SOLVENTS; IMIDES; PHENYLS; OLIGOMERS; SYNTHESIS (CHEMISTRY); COPOLYMERS; GLASS TRANSITION TEMPERATURE; ACETYLENE; RHEOLOGY
|Development, Validation, and Potential Enhancements to the Second-Generation Operational Aerosol Product at the National Environmental Satellite, Data, and Information Service of the National Oceanic and Atmospheric Administration - Stowe, Larry L.|
A revised (phase 2) single-channel algorithm for aerosol optical thickness, tau(sup A)(sub SAT), retrieval over oceans from radiances in channel 1 (0.63 microns) of the Advanced Very High Resolution Radiometer (AVHRR) has been implemented at the National Oceanic and Atmospheric Administration's National Environmental Satellite Data and Information Service for the NOAA 14 satellite launched December 30, 1994...
Keywords: VENUS SURFACE; BASALT; VISCOSITY; ASPECT RATIO; RHEOLOGY; LAVA; RHYOLITE; LANDFORMS; VOLCANOLOGY; OCEAN BOTTOM; EARTH SURFACE; VOLCANOES; LATENT HEAT
|Fast causal multicast - Birman, Kenneth P.|
A new protocol is presented that efficiently implements a reliable, causally ordered multicast primitive and is easily extended into a totally ordered one. Intended for use in the ISIS toolkit, it offers a way to bypass the most costly aspects of ISIS while benefiting from virtual synchrony. The facility scales with bounded overhead. Measured speedups of more than an order of magnitude were obtained when the protocol was implemented within ISIS...
Keywords: CERAMIC MATRIX COMPOSITES; FRACTURE STRENGTH; FRACTURING; HYDROLYSIS; METHYL COMPOUNDS; PH; PHENYLS; PYROLYSIS; TENSILE TESTS; CERAMICS; COPOLYMERS; MOLECULAR STRUCTURE; RHEOLOGY; STRESS-STRAIN RELATIONSHIPS; AMORPHOUS MATERIALS; BRITTLENESS; COMPRESSIVE STRENGTH
|Thermal Barrier Coating Workshop, 1997 - NON|
This document contains papers from the 1997 Thermal Barrier Coatings Workshop, sponsored by the TBC Interagency Coordination Committee. The Workshop was held in Fort Mitchell, Kentucky, May 19-21, 1997. The papers cover the topics of heat transfer and conductivity of thermal barrier coatings, failure mechanisms and characterization of the coatings as well as characterization of coating deposition methods...
Keywords: CRYSTAL GROWTH; RHEOLOGY; NEUMANN PROBLEM; MEASURE AND INTEGRATION; DEFORMATION; DIFFUSION; BOUNDARY CONDITIONS; LIQUID CRYSTALS; GRID GENERATION (MATHEMATICS); SOFTWARE DEVELOPMENT TOOLS; COMPUTATION; CAPILLARY FLOW; THICKNESS; SURFACTANTS; SURFACE PROPERTIES
|Geometry of miocene extensional deformation, lower Colorado River Region, Southeastern California and Southwestern Arizona: Evidence for the presence of a regional low-angle normal fault - Tosdal, R. M.|
The geometry of Miocene extensional deformation, which changes along a 120 km-long, northeast-trending transect from the southestern Chocolate Mountains, southeastern California, to the Trigo and southern Dome Rock Mountains, southwestern Arizona is discussed. Based upon regional differences in the structural response to extension and estimated extensional strain, the transet can be divided into three northwesterly-trending structural domains...
Keywords: CRUSTAL FRACTURES; MATHEMATICAL MODELS; RHEOLOGY; ROCKS; STRAIN RATE; EARTH CRUST; GEOLOGICAL FAULTS; HEAT TRANSFER; NORTH AMERICA; PLANETARY TEMPERATURE; BRITTLENESS; CHEMICAL COMPOSITION; DUCTILE-BRITTLE TRANSITION
|Chimera: A grid-embedding technique - Benek, J. A.|
A three-dimensional chimera grid-embedding technique is described. The technique simplifies the construction of computational grids about complex geometries. The method subdivides the physical domain into regions which can accommodate easily generated grids. Communication among the grids is accomplished by interpolation of the dependent variables at grid boundaries. The procedures for constructing the composite mesh and the associated data structures are described...
Keywords: CONVECTIVE HEAT TRANSFER; FINITE ELEMENT METHOD; SHEAR STRESS; TEMPERATURE GRADIENTS; TIME DEPENDENCE; GEOLOGICAL FAULTS; LITHOSPHERE; MASS TRANSFER; MELTING; RHEOLOGY; THICKNESS; BOUNDARY VALUE PROBLEMS; COMPUTER PROGRAMS
|The Heart Mountain fault: Implications for the dynamics of decollement - Melosh, H. J|
The Hart Mountain docollement in Northwestern Wyoming originally comprised a plate of rock up to 750m thick and 1300 sq kilometers in area. This plate moved rapidly down a slope no steeper than 2 deg. during Early Eocene time, transporting some blocks at least 50m from their original positions. Sliding occurred just before a volcanic erruption and was probably accompanied by seismic events. The initial movement was along a bedding plane fault in the Bighorn Dolomite, 2 to 3 meters above its cont...
Keywords: CALLISTO; CONDUCTIVE HEAT TRANSFER; ESTIMATES; ICY SATELLITES; RHEOLOGY; STRUCTURAL FAILURE; THICKNESS; TIME; GANYMEDE; GEOCHRONOLOGY; LITHOSPHERE; TECTONICS; TEMPERATURE PROFILES; THERMAL STRESSES; VISCOELASTICITY; BRITTLENESS
|Dairy Processing Handbook - Tetrapak|
Dairy Processing Handbook TetrapakMilk production began 6 000 years ago or even earlier. The dairy animals of today have been developed from untamed animals which, through thousands of years, lived at different altitudes and latitudes exposed to natural and, many times, severe and extreme conditions. Practically everywhere on earth man started domesticating animals. As a rule herbivorous, multipurpose animals were chosen to satisfy his need of milk, meat, clothing, etc...
Keywords: Milk processing; dairy; handbook; tetrapak; rheology; organisms; cows; sheep; goats; cheese making; pasteurization; yogurt; protein; fat; minerals; milk solids; milking machines
Downloads: 196 (1 review)
|Space station structures development - Teller, V. B|
A study of three interrelated tasks focusing on deployable Space Station truss structures is discussed. Task 1, the development of an alternate deployment system for linear truss, resulted in the preliminary design of an in-space reloadable linear motor deployer. Task 2, advanced composites deployable truss development, resulted in the testing and evaluation of composite materials for struts used in a deployable linear truss...
Keywords: CLUSTERS; RHEOLOGY; SPACE STATION PAYLOADS; SPACEBORNE EXPERIMENTS; STELLAR EVOLUTION; CARBON; HARDWARE; SHEAR FLOW; SILICON; SPACE COMMERCIALIZATION; SPACE STATIONS; DUST; VACUUM PUMPS; FERROELECTRICITY; FRACTALS; INELASTIC COLLISIONS; KINETIC THEORY; MICROGRAVITY; PARTICLE BEAMS; PARTICLES
|MIT20.309F06 - MIT OpenCourseWare|
This course covers sensing and measurement for quantitative molecular/cell/tissue analysis, in terms of genetic, biochemical, and biophysical properties. Methods include light and fluorescence microscopies; electro-mechanical probes such as atomic force microscopy, laser and magnetic traps, and MEMS devices; and the application of statistics, probability and noise analysis to experimental data. Enrollment preference is given to juniors and seniors.
Keywords: DNA analysis; Fourier analysis; FFT; DNA melting; electronics; microscopy; microscope; probes; biology; atomic force microscope; AFM; scanning probe microscope; image processing; MATLAB; convolution; optoelectronics; rheology; fluorescence; noise; detector; optics; diffraction; optical trap; 3D; 3-D; three-dimensional imaging; visualization
|ASTM/NBS basestock consistency study data (Volume NBS Special Publication 661) - Weeks, S. J|
Keywords: ASTM and NBS co-sponsored a Basestock Consistency Study (BCS) to assess the quality consistency of lubricating base oils. This study, which is the first of its kind, will impact on developing basestock characterization methodology and on efficient utilization of energy resources as well as their conservation through recycling. The purpose of this publication is to present the ASTM/NBS BCS data for data analysis. Monthly production samples from six re-refiners and four refiners were analyzed by 14 laboratories for a 13 month period. The results of over 55 tests are divided according to six major categories: rheology, physical properties, chemical properties, hydrocarbon type analysis, general performance tests, and oxidation and wear bench tests. The data are presented in tabular and grphical form, which is quite amenable to further data analysis